CN202510988U

CN202510988U - Gas valve well leakage monitoring terminal

Info

Publication number: CN202510988U
Application number: CN2012200698325U
Authority: CN
Inventors: 武爱斌; 傅兵; 魏小庆; 郭钟; 陈龙
Original assignee: NANJING LUCULENT SOFTWARE CO Ltd
Current assignee: Longkon wisdom Polytron Technologies Inc
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2012-10-31
Anticipated expiration: 2022-02-28

Abstract

The utility model relates to a gas valve well leakage monitoring terminal. The terminal is characterized by comprising an input/output (I/O) terminal, a 16-bit reduced instruction-set computer (RISC) core, a random access memory/read only memory (RAM/ROM), analog to digital (A/D) conversion, temperature monitoring signal conditioning, a water level detection probe, device abnormity monitoring, an infrared spectrum composition analyzer, an installation area water level and gas sampling. The gas valve well leakage monitoring terminal has the advantages that a general packet radio service (GPRS) transmission technology, a low-power consumption control technology, an anti-theft alarming technology and a gas leakage detection monitoring technology are combined, a manual routing inspection method is converted into a modern automatic method which can achieve day and night real-time monitoring, the alarming or pre-alarming capability of the gas pipe network leakage of the whole city is improved and promoted, and hazards caused by the gas leakage are reduced. The system has the advantages of being high in automation degree, easy to maintain and repair and low in system cost.

Description

Combustion gas valve pit leakage monitoring terminal

Technical field

The utility model relates to a kind of combustion gas valve pit leakage monitoring terminal, belong to combustion gas valve pit leakage monitoring technical field.

Background technique

In all types of industries pipeline, burning line is to distribute the most extensively, relate to the maximum high-risk pressure line in zone in the city scope.From the view of security; The combustion gas valve pit is the intensive relatively place of equipment on the whole gas ductwork circuit; Because the existence of factors such as the regional temperature difference, surface subsidence, weld defect, long neglected and in disrepair, corrosive pipeline and outside destroy, possibly cause in the valve pit the bad or pipe leakage on every side of valve seal, combustion gas is easy in valve pit, form piles up; The blast and the deflagration accident having that cause thus happen occasionally; Particularly along with gas ductwork becomes increasingly complex, pipeline is more and more longer, the major safety risks problem is outstanding all the more, serious threat social public security and public interest.Present combustion gas valve pit leaks monitoring means commonly used has artificial sense of smell detection, the inspection of artificial instrument, ground flora observation etc.; But there is certain drawback in these monitoring means commonly used, as: efficient is low, real-time is poor, monitoring range is limited, cost of human resources is high, effectively early warning etc.

Summary of the invention

What the utility model proposed is a kind of combustion gas valve pit leakage monitoring terminal; Its objective is concrete application demand to combustion gas valve pit leakage monitoring; With wireless GPRS transmission technology, low power consumption control technology, burglar alarm is technological combines with the gas leakage detecting technology; The manual inspection mode of leaking the prevention pipeline gas changes round the clock the modernized automatic mode of monitoring in real time into, thereby reduces the harm that the gas leakage accident causes.This system has characteristics such as automaticity height, maintaining is easy, system cost is low.

The technical solution of the utility model: the signal input part that it is characterized in that an equipment unusual fluctuation monitor signal output terminal and an I/O port joins; First signal input part of the signal output part of the one I/O port and 16 RISC nuclears joins; The signal input part of mounting zone water level signal output terminal and water level detecting probe joins; The signal output part of water level detecting probe and the signal input part of the 2nd I/O port join; The secondary signal input end of the signal output part of the 2nd I/O port and 16 RISC nuclears joins; The gas signal output terminal of gas sampling sensor and the temperature signal input end of infrared spectrum analytical instrument join; The temperature signal output terminal of infrared spectrum analytical instrument and the signal input part of signal condition join; The signal input part of the signal output part of signal condition and first A/D converter joins, and the 3rd signal input part of the signal output part of first A/D converter and 16 RISC nuclears joins, and the temperature signal output terminal of temperature monitoring and the signal input part of second A/D converter join; The 4th signal input part of the signal output part of second A/D converter and 16 RISC nuclears joins; The 5th signal input part of 16 RISC nuclears and the signal output part of clock circuit join, and the 6th signal input part of 16 RISC nuclears and the signal output part of reset circuit join, and the 7th signal input part of 16 RISC nuclears and the power output end of power circuit join; The signal output part of 16 RISC nuclears and the signal input part of the 3rd I/O port join; The signal output part of the 3rd I/O port and the signal input part of watchdog circuit join, and the signal output part of watchdog circuit and the signal input part of reset circuit join, first corresponding the joining of signal I/O end of the signal output/input end of GPRS/GSM communication module and PORT COM; The secondary signal I/O end of PORT COM and 16 RISC nuclear first signal output/input end is corresponding joins, secondary signal output/input end that 16 RISC examine and corresponding the joining of signal I/O end of RAM/ROM.

The advantage of the utility model: monitor gas concentration and height of water level in the valve pit, and the data that monitor are sent to Surveillance center through GPRS network or SMS.Show gas concentration and height of water level in each valve pit in real time based on three-dimensional gas distribution system, gas network figure.The long preservation of real time data, logout, operation note.Show trend curve to a certain valve pit Check point, also can carry out many valve pits Check point and show trend curve simultaneously, through analyzing and contrast realization prediction warning function.Employing is based on the infrared detection technique principle of NDIR technology; Remarkable advantages such as have the precision height, selectivity is good, sensitivity is reliable, reaction is fast, measuring range is wide, do not poison, do not rely on oxygen, receive that the environmental interference factor is less, the life-span is long; Both exempted semiconductor transducer less stable commonly used; Affected by environment bigger, easy poisoning has overcome the work of catalytic combustion-type sensor dying fire again, and the drawback of the explosion risk that ignites is arranged.Adopt the GPRS/GSM wireless transmission: the combustion gas detecting devices can be installed on any place, need not wiring, and coverage area is wider; Specially designed antenna system guarantees that antenna is installed in the reception of down-hole, need not excavated pavement; Easy for installation, also be convenient to simultaneously safeguard; Quiescent current is very little, adopts the mode that Event triggered+loop cycle work combines not only to guarantee the real-time of warning message but also be convenient to draw the overall density curve; Adopt respiratory membrane technology covering sensor space exploration surface to accomplish that waterproof and breathable effectively prolongs the working life of probe, the anti-water logging of probe.

Description of drawings

Accompanying drawing 1 is the structural representation at combustion gas valve pit leakage monitoring terminal.

Accompanying drawing 2 is structural representations of water level detecting probe.

Among the figure 1 is infrared acquisition probe, the 2nd, cavity, the 3rd, probing shell.

Embodiment

Contrast accompanying drawing 1; Its structure is that the signal input part of an equipment unusual fluctuation monitor signal output terminal and an I/O port joins; First signal input part of the signal output part of the one I/O port and 16 RISC nuclears joins; The signal input part of mounting zone water level signal output terminal and water level detecting probe joins, and the signal output part of water level detecting probe and the signal input part of the 2nd I/O port join, and the secondary signal input end of the signal output part of the 2nd I/O port and 16 RISC nuclears joins; The gas signal output terminal of gas sampling and the temperature signal input end of infrared spectrum analytical instrument join; The temperature signal output terminal of infrared spectrum analytical instrument and the signal input part of signal condition join, and the signal input part of the signal output part of signal condition and first A/D converter joins, and the 3rd signal input part of the signal output part of first A/D converter and 16 RISC nuclears joins; The temperature signal output terminal of temperature monitoring and the signal input part of second A/D converter join; The 4th signal input part of the signal output part of second A/D converter and 16 RISC nuclears joins, and the 5th signal input part of 16 RISC nuclears and the signal output part of clock circuit join

The 6th signal input part of 16 RISC nuclears and the signal output part of reset circuit join; The 7th signal input part of 16 RISC nuclears and the power output end of power circuit join; The signal output part of 16 RISC nuclears and the signal input part of the 3rd I/O port join; The signal output part of the 3rd I/O port and the signal input part of watchdog circuit join; The signal output part of watchdog circuit and the signal input part of reset circuit join; First corresponding the joining of signal I/O end of the signal output/input end of GPRS/GSM communication module and PORT COM, the secondary signal I/O end of PORT COM and 16 RISC nuclears first signal output/input end is corresponding joins, secondary signal output/input end that 16 RISC examine and corresponding the joining of signal I/O end of RAM/ROM.

The gas leakage monitoring terminal adopts powered battery, and all the moment is noted the target of low power consumption in the conceptual design of the type selecting of device and product.Power supply adopts high conversion efficiency and low speed paper tape reader static power disspation device, and all high-power peripheral hardwares all are provided with power remove, is not carrying out closing corresponding peripheral hardware power supply when signals collecting and data transmit.Embedded microcontroller adopts the super low-power consumption device, owing to be provided with external house dog device, needs the periodic wakeup single-chip microcomputer.Through test system power dissipation when every 0.125S wakes a time up is 0.044ma3.6V, and the probe power consumption is 95ma3.6V, and GSM communication module power consumption is 280ma3.6V, and the inferior powered battery of adapted 4 joint ER341245 lithiums can satisfy the power demands in 1 year.

The flame proof design is adopted at combustion gas valve pit leak detection terminal, explosive-proof grade Exd II BT4, and detecting sensor is installed on the down-hole, and gas concentration and ponding liquid level are monitored, and prober adopts battery and solar panel power supply.

Combustion gas valve pit leak detection terminal quantity is many and distribute and disperse, and the situation at each station is not quite similar, so the best mode of data transmission is wireless GPRS, and this mode is not limited by wiring condition.The built-in SIM of GPRS transmission equipment, through move/the GPRS service of company is connected to the internet, when the GPRS communication link stops up, can sends to pipe network center SMS platform through note and carry out early warning.

The operator can obtain various historical datas through different querying condition (comprising time, user, data area etc.) is set from database; Also can inquire about alarm logging; Obtain to produce the time and the reason of reporting to the police; Various data are analyzed, and can be realized data sharing in the Local Area Network intra vires.

But the on-the-spot device therefor of each valve pit website of system's typing, caliber etc., and site contact's name and phone, the convenient use.

Instrument in monitoring network can be set the used communication protocol of instrument through choice of equipment, distinguishes automatically when data are accepted.And can increase communication protocol according to customer requirements.

System can carry out the crowd to all monitoring sub-stations and receive mass-sending; According to system requirements, each acquisition substation is set different acquisition interval.

Before each work the working condition of equipment self is carried out self check, report to the police immediately, avoid because the testing result of detection facility fault generating mistake if any fault;

The battery electric quantity measuring ability: can in time report to the police when battery electric quantity is low, battery is changed in prompting, exempts the possibility of equipment failure;

The gas leakage monitoring terminal adopts powered battery, is not carrying out closing corresponding peripheral hardware power supply when signals collecting and data transmit.Embedded microcontroller adopts the super low-power consumption device, owing to be provided with external house dog device, needs the periodic wakeup single-chip microcomputer.Through test system power dissipation when every 0.125S wakes a time up is 0.044ma3.6V, and the probe power consumption is 95ma3.6V, and GSM communication module power consumption is 280ma3.6V, and the inferior powered battery of adapted 4 joint ER341245 lithiums can satisfy the power demands in 1 year.

Contrast accompanying drawing 2, probing shell 3 adopt pressure from hindering the formula design proposal, and infrared acquisition probe 1 is installed in the probing shell 3; The have an appointment cavity 2 of 40mm of probe distance shell lower end mouth at rainstorm weather, does not have probe if gather a large amount of water loggings below the valve pit; When water gets into cavity from the cavity lower end; This moment, cavity volume diminished, and it is big that gas density becomes, thereby air pressure increases; Water just can't get into cavity when the cavity internal air pressure equals the pressure of outer water, stops moisture to continue to get into cavity damage infrared probe thereby reach.

Probing shell is fixed on the mounting plate of the borehole wall through two deep trouths of outer wall; Band water-level alarm testing apparatus on the mounting plate; The lower end that surpasses probing shell when water level; Thereby the probing shell lower end is owing to firmly can't be monitored combustable gas concentration by water seal at this moment, and processor can send and stop the work of gas leakage monitoring probe, sends water-level alarm information for simultaneously the monitoring system terminal.

Gas leakage probe range is that 0～5%vol resolution is 1%FSD, except the leak detection accurate gas concentration value being provided also qualitatively.

Claims

1. combustion gas valve pit leakage monitoring terminal; The signal input part that it is characterized in that an equipment unusual fluctuation monitor signal output terminal and an I/O port joins; First signal input part of the signal output part of the one I/O port and 16 RISC nuclears joins; The signal input part of mounting zone water level signal output terminal and water level detecting probe joins; The signal output part of water level detecting probe and the signal input part of the 2nd I/O port join; The secondary signal input end of the signal output part of the 2nd I/O port and 16 RISC nuclears joins; The gas signal output terminal of gas sampling sensor and the temperature signal input end of infrared spectrum analytical instrument join, and the temperature signal output terminal of infrared spectrum analytical instrument and the signal input part of signal condition join, and the signal input part of the signal output part of signal condition and first A/D converter joins; The 3rd signal input part of the signal output part of first A/D converter and 16 RISC nuclears joins; The temperature signal output terminal of temperature monitoring and the signal input part of second A/D converter join, and the 4th signal input part of the signal output part of second A/D converter and 16 RISC nuclears joins, and the 5th signal input part of 16 RISC nuclears and the signal output part of clock circuit join; The 6th signal input part of 16 RISC nuclears and the signal output part of reset circuit join; The 7th signal input part of 16 RISC nuclears and the power output end of power circuit join, and the signal output part of 16 RISC nuclears and the signal input part of the 3rd I/O port join, and the signal output part of the 3rd I/O port and the signal input part of watchdog circuit join; The signal output part of watchdog circuit and the signal input part of reset circuit join; First corresponding the joining of signal I/O end of the signal output/input end of GPRS/GSM communication module and PORT COM, the secondary signal I/O end of PORT COM and 16 RISC nuclears first signal output/input end is corresponding joins, secondary signal output/input end that 16 RISC examine and corresponding the joining of signal I/O end of RAM/ROM.

2. combustion gas valve pit leakage monitoring according to claim 1 terminal; It is characterized in that water level detecting probe comprises infrared acquisition probe, cavity, probing shell; Wherein the infrared acquisition probe is installed in the probing shell, and infrared acquisition probe distance probing shell lower end mouth has the cavity of 40mm.

3. combustion gas valve pit leakage monitoring according to claim 2 terminal is characterized in that probing shell is fixed on the mounting plate of the borehole wall through two deep trouths of outer wall, band water-level alarm testing apparatus on the mounting plate.

4. combustion gas valve pit leakage monitoring according to claim 1 terminal, the probe range that it is characterized in that the gas sampling sensor are that 0～5%vol resolution is 1%FSD.